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QA results of analysis of st_W events

  1. Basic vertex & event count statistics for all produced runs CVS table
  2. Vertex efficiency for L2W-ET events is lower at the beginning of the fill,
    Computed as ratio of events.
  3. Vertex efficiency for L2W-ET events does not depend in bXing. Below are 2 runs from begin & end of fill F10505.
    Efficiency is from fit of constant to bXing ratio. Statistical errors are ignored.

    R10096139, begin of fill, vert eff=70%

    R10096139, end of fill, vert eff=82%

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